Opened 16 years ago
Closed 15 years ago
#1344 closed bug (fixed)
Zooming to a very small area causes a long freeze
Reported by: | havatv | Owned by: | nobody |
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Priority: | minor: annoyance | Milestone: | Version 1.0.3 |
Component: | GUI | Version: | Trunk |
Keywords: | Cc: | pcav | |
Must Fix for Release: | No | Platform: | Windows |
Platform Version: | Awaiting user input: | no |
Description
I have a PostGIS layer (municipality polygons). I experience a several minutes long freeze (with high CPU) when I zoom to a small area (scales larger than about 1:2000). No problem for smaller map scales (larger zoom windows). The extent of the dataset is about 3000 km N-S and 1000 km E-W. Quantum GIS Kore 1.0.0 preview1, code revision 9407 on MS Windows NT.
Change History (6)
comment:1 by , 16 years ago
comment:2 by , 16 years ago
Summary: | Zooming in causes a *long* delay when the zoom window is wholly contained in a polygon of another layer → Zooming to a very small area causes a long freeze |
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Are there any rasters loaded?
comment:3 by , 16 years ago
No rasters were involved at the time I was zooming in and out (I don't recall if any rasters were loaded earlier in the session - in case, it would have had to be a WMS layer). I tested again today (with the same version of QGIS). This time, I saw no such delays as those I had experienced the last time. Everything ran smoothly and fast. I must have experienced something that shows up after a while... - I was testing the software, so I don't recall exactly what I did before I experienced the zoom delays.
comment:4 by , 15 years ago
I think this is related to #1311, to which I have just posted an example of how to reproduce the error.
comment:5 by , 15 years ago
Cc: | added |
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I tested this report with Qgis 1.2 (rev. 10972M) installed from OSGeo4W under windows XP Professional, and I cannot replicate it.
Used a polygon postgis layer, with other layer loaded from wms/wfs, and tried to zoom to very small areas. Rendering seems to me slower on windows rather than on linux, but I experienced no unacceptable delays or freezes.
If none will reply in the next days I'll close this.
comment:6 by , 15 years ago
Resolution: | → fixed |
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Status: | new → closed |
Closing this ticket. Reopen if necessary.
I am very sorry that the title turned out to be wrong on this bug report. I was in the middle of exploring the bug when I made the title, and after experimenting a bit, I found out that the "bug" was only scale dependent.
Is it possible for someone to change the title to: "Zooming to a very small area causes a long freeze" ?